AFK ban system

My league of legends bug splatted and caused me to get a 5 or 10 game 20 min lower priority queue. I find this to be complete bull shit because I just got done playing 5 20 minute priority queue games last night. Not only that, I had 5 10 minute priority queue games, got done with them, played one game (DID NOT AFK), and then suddenly, I had 20 minute low priority queue. The system gave me more than one punishment for the same offense. I have spent hundreds of dollars on this game, but if this AFK ban isn't lifted you can expect I will not be spending another dollar.